Khloe Kardashian fans have begun to wonder why the star has a â??different faceâ? in every selfie posted on Instagram.

Kardashian's younger sister, 35, has recently received harsh criticism from followers for her "new face" after posting a photo on social media on Sunday.

Some told her that â??she looked like a different person every yearâ? after comparing her current face with that with photos posted some time ago, claiming she changed her face with surgery.

Followers seem to have defended the star and come up with a theory that explains why it looks so different now.

A follower suggested that the 'Keeping Up With The Kardashians' star just wants to look the same as her older sisters, Kourtney, 41, and Kim, 39.

At an online forum, they said, "She hates things that make her look different from her sisters."

Another follower wrote: "Yes but even before the operation and Photoshop she didn't look like anyone in that family."

According to rumors, Khloe is the daughter of former football star OJ Simpson and that is why she does not resemble other family members. She is blonde while the brunette sisters.

Over the years, Khloe has tried and tested to turn brunette to look more like her famous sisters.

Someone else wrote that Khloe doesnâ??t have to look like her sisters to be beautiful.

"I'm sorry for her. Imagine the pressure to look beautiful when your sisters set the standard of (instagram) beauty," wrote another.